Traffic signs are already in place, warning drivers to expect delays along the race courses for the marathon, half marathon and relays.

The most congested areas are expected to be any part of the race that intersects with Rogers Avenue.

Old Greenwood Road should be busy too, especially where it nears Zero Street.

"It crosses some pretty big intersections,” Cole said. “We’ll have police officers, sheriffs, barricades, and volunteers out there, but we just really want to make sure that the community knows that you might expect some delays as marathoners are running across those intersections."